Features: Sanwa 2.4GHz FH3/FH4 Selectable via Transmitter 4 channel support and Microsize ( Antennaless:25.5x22x17.3mm, Standard:30x24x16mm) Achieve precise control with this 4 channel antennaless receiver, offering selection for superior car performances. Lightweight and this receiver features a stable signal transmission on the 2.4GHz frequency. Great for indoor and outdoor car model competitions, ensuring a reliable signal connection for smooth operation and improved driving training. Specifications: Item: FH3 FH4 4Channel Antennaless Receiver Operating Voltage3.5V - 8.4V: Weight: 5g Battery Limit: 3.5-5.0V (FH3) / 3.5-7.4V (FH4) Package Includes: 1PC FH3 FH4 4Channel Antennaless Receiver note: Due to the problem of lighting effectsand shootingangle, there mightbe certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurmen